title: Non-volatile control of 2DEG conductivity at oxide interfaces.
abstract: The functionalization of two-dimensional electron gas (2DEG) at oxide interfaces can be realized integrating 2DEG with multifunctional oxide overlayers by epitaxial growth. Using a ferroelectric Pb(Zr0.2 Ti0.8 )O3 overlayer on 2DEG (LaAlO3 /SrTiO3 ), we demonstrate a model system of the functionalized 2DEG, where electrical conductivity of 2DEG can be reversibly controlled with a large on/off ratio (>1000) in a non-volatile way by ferroelectric polarization switching.
authors.affiliation: Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Nanomaterials Science and Technology, University of Science and Technology, Daejeon, 305-333, Republic of Korea.
authors.forename: Shin-Ik
authors.initials: SI
authors.lastname: Kim
authors.forename: Dai-Hong
authors.initials: DH
authors.lastname: Kim
authors.forename: Yoonjung
authors.initials: Y
authors.lastname: Kim
authors.forename: Seon Young
authors.initials: SY
authors.lastname: Moon
authors.forename: Min-Gyu
authors.initials: MG
authors.lastname: Kang
authors.forename: Jong Kwon
authors.initials: JK
authors.lastname: Choi
authors.forename: Ho Won
authors.initials: HW
authors.lastname: Jang
authors.forename: Seong Keun
authors.initials: SK
authors.lastname: Kim
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Choi
authors.forename: Seok-Jin
authors.initials: SJ
authors.lastname: Yoon
authors.forename: Hye Jung
authors.initials: HJ
authors.lastname: Chang
authors.forename: Chong-Yun
authors.initials: CY
authors.lastname: Kang
authors.forename: Suyoun
authors.initials: S
authors.lastname: Lee
authors.forename: Seong-Hyeon
authors.initials: SH
authors.lastname: Hong
authors.forename: Jin-Sang
authors.initials: JS
authors.lastname: Kim
authors.forename: Seung-Hyub
authors.initials: SH
authors.lastname: Baek
keywords: epitaxial oxide thin films; ferroelectric; multifunctional oxide; two-dimentional electron gas